Malicious PDF — malware analysis report

Static analysis result for SHA-256 02201ec380842c4f…

MALICIOUS

PDF

42.0 KB Created: 2020-08-12 12:20:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: c2a58fa24cf625a50c57721d8f2fef69 SHA-1: 2b0d5b2635d4a76fc5e2dc8f7bef408159c8e5c8 SHA-256: 02201ec380842c4f090f65a620fed85cf47ec0f8d77ed7daadf856b15b2ff1c7
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a significant number of embedded URLs, with one identified as a malicious redirector. The heuristic firings indicate a link farm strategy, likely to obscure malicious intent or engage in SEO manipulation. While no scripts were extracted, the presence of numerous external links suggests an attempt to lead the user to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.com/pify?keyword=anansi+and+the+turtle+pdf In PDF document text
    • http://buliwenaw.heroinetheplay.com/uploads/1/3/1/4/131482975/857590.pdfIn PDF document text
    • http://files.odoriworld.com/uploads/1/3/1/4/131438539/narududipizupet.pdfIn PDF document text
    • http://files.albertadeer.com/uploads/1/3/0/8/130813736/0449269e318688.pdfIn PDF document text
    • http://files.loufitness.co.uk/uploads/1/3/2/7/132740814/3254275.pdfIn PDF document text
    • http://xivozima.thewarsoftherosescatalogue.com/uploads/1/3/1/3/131380404/6092033.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3945/7431/files/52480698254.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4670/5051/files/71129256626.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9539/9325/files/nevazoloduzerenanulaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6575/1192/files/lozozojafipo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1939/3448/files/zagaloviritudopotokig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/8307/5477/files/define_organizational_behaviour.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7250/4483/files/67907891176.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9848/1564/files/76004158688.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2953/6676/files/kenikegirowubilafag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2639/0933/files/watatizilunexokowemerabe.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000066fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66FA 5120 bytes
SHA-256: d309dc109aac2407ff063ab8edd073009f126740d4ceea96fdaf4a50f2c8933f
font_01_sfnt_off00007856.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7856 10376 bytes
SHA-256: cc4c546c2015ed269b6708ec53a3099aa1597fa6ba71388ce57ced399bc17fe6

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